Trinisphere Aetherdrift −2: Target player sacrifices a

−2: Target player sacrifices a creature

Bargain (You may sacrifice an artifact

Sacrifice another creature: Put a -1/-1 counter on up to one target creature and draw a card

or Dragon creature card from your hand onto the battlefield tapped and attacking that opponent

then you may cast any number of spells from among those cards without paying their mana costs

Trinisphere Aetherdrift −2: Target player sacrifices aAs long as this artifact is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost {1}{B} to cast costs {2}{B} to cast instead.)